13/09/2018

JOYALL TIRETESTING REPORT

11R22.5 Drive A878

Unit#3083

• Installation Date: 10/05/2018

• Installation Mileage: 518,009Km

• Tracking Date: 13/09/2018

• Tracking Mileage:592,168Km

• Tire mileage in driving: 74,159Km

Passenger Side

Driver Side

11R22.5 A878 Drive Tread Measurement

Driver Side

Tire PositionTread River

LFO/Drive98psi

17.42 15.47 18.6317.52 15.75 17.9818.17 15.78 15.7417.70 15.67 17.45 16.94

Tire PositionTread River

LRO/Drive98psi

17.42 15.47 18.6317.52 15.75 17.9818.17 15.78 15.7417.70 15.67 17.45 16.94

Tire PositionTread River

LFI/Drive97psi

17.75 15.08 16.8317.94 15.52 17.0618.75 15.99 17.9418.15 15.53 17.28 16.98

Tire PositionTread River

LRI/Drive98psi

17.71 15.16 15.7417.11 15 16.1317.42 15.3 16.4617.41 15.15 16.11 16.23

Driver Side Drive tires11R22.5 A878

Analysis on drive side tires

• HEEL AND TOE WEAR (SLIGHTLY)

• TIRE SIZE

• Heel and Toe Wear is seen most often on drive tires with block type tread patterns. Tread elements are taller on the front edge than the back edge.

• CAUSE

• Mismatched inflation pressures on dual tires and not rotating tires. Other causes include: high torque and driving in mountainous terrain.

• ACTION

• Maintain proper inflation pressures between 105~115psi

• Reversing the direction of rotation (if the tire is not directional) can extend service life. Consider less aggressive tread patterns in highway operations.

Driver Side Drive tires

11R22.5 A878

15,500Km~18,500Km per mm tread wear

Tire life between: 360,000Km~430,000Km in projection estimate

11R22.5 A878 Passenger Side Tread Measurement

Passenger Side

Tire PositionTread River

RFO/Drive99psi

17.02 15.34 17.9616.57 16.38 17.55

16.80 15.86 17.76 16.80

Tire PositionTread River

RFI/Drive99psi

17.67 16.92 17.7817.39 15.6 18.0117.69 15.41 18.0617.58 15.98 17.95 17.17

Tire PositionTread River

RRO/Drive98psi

16.40 14.62 17.4617.11 14.46 17.9716.25 15.29 17.4616.59 14.79 17.63 16.34

Tire PositionTread River

RRI/Drive98psi

17.68 15.99 17.8316.75 14.94 16.7317.19 15.04 16.6417.21 15.32 17.07 16.53

Analysis of passenger side tires

HEEL AND TOE WEAR (SLIGHTLY)

TIRE SIZE

Heel and Toe Wear is seen most often on drive tires with block type tread patterns. Tread elements are taller on the front edge than the back edge.

CAUSE

Mismatched inflation pressures on dual tires and not rotating tires. Other causes include: high torque and driving in mountainous terrain.

ACTION

Maintain proper inflation pressures between 105~115psi

Reversing the direction of rotation (if the tire is not directional) can extend service life. Consider less aggressive tread patterns in highway operations.

Passenger side tires

11R22.5 A878

16,500Km~19,400Km per mm tread wear

Tire life between: 370,000Km~450,000Km

Joyall Truck Tire Testing Program: Unit # 3083

S.N. TreadDepth

Position Installed Track Date

Mileage Km Trip Air

PressureTread Read Tread Wear Tire

Mileage Project Tire Mileage Total Project

mm Date MileageKm Km Km psi mm mm per

Km/mmSteer

(3.18mm)Drive

(1.59mm)Tire Mileage

Km

11R22.5A878 Drive

21 LFO

10/10/2018

518,009

13/09/2018

592,168 74159 98.00 16.83 4.17 17,774.46 414,002.74 414,002.74

21 LFI 518,009 592,168 74159 98.00 16.98 4.02 18,467.93 430,155.03 430,155.03

21 LRO 518,009 592,168 74159 98.00 16.94 4.06 18,265.76 425,446.16 425,446.16

21 LRI 518,009 592,168 74159 98.00 16.23 4.77 15,532.49 361,782.71 361,782.71

21 RFO 518,009 592,168 74159 98.00 16.80 4.20 17,670.93 411,591.29 411,591.29

21 RFI 518,009 592,168 74159 98.00 16.34 4.66 15,898.79 370,314.50 370,314.50

21 RRO 518,009 592,168 74159 98.00 17.17 3.83 19,362.66 450,995.15 450,995.15

21 RRI 518,009 592,168 74159 98.00 16.53 4.47 16,598.63 386,615.34 386,615.34

Trailer Unit # 527

11R22.5 A8 16PLY

Installation mileage:217,445KmInspection date:13/09/2018Inspection mileage: 226,931Tire rolling trip: 9,486KmTread Wear: 0.86mm

All tires is in excellent conditions at early stage